petsc-3.10.2 2018-10-09
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KSPPIPEGCRGetMmax

get the maximum number of previous directions PIPEGCR will store

Synopsis

#include "petscksp.h"  
PetscErrorCode KSPPIPEGCRGetMmax(KSP ksp,PetscInt *mmax)
Note: PIPEGCR stores mmax+1 directions at most (mmax previous ones, and one current one)

Not Collective

Input Parameter

ksp -the Krylov space context

Output Parameter

mmax -the maximum number of previous directons allowed for orthogonalization

Options Database

-ksp_pipegcr_mmax <N> -

Keywords

KSP, PIPEGCR, truncation

See Also

KSPPIPEGCR, KSPPIPEGCRGetTruncationType(), KSPPIPEGCRGetNprealloc(), KSPPIPEGCRSetMmax()

Level

intermediate

Location

src/ksp/ksp/impls/gcr/pipegcr/pipegcr.c
Index of all KSP routines
Table of Contents for all manual pages
Index of all manual pages